The purpose of life is to serve others. However, when doing so, you should not expect something in return; your intention should be to lessen other people’s misery. “Service to others should be sincere and done from the heart; only then it is fruitful.” Do any trees eat their own fruit? No. This teaches us that human beings should not only use their mind, body and speech for themselves, but also to serve others. When you do this, nature in turn will reward you.